Optimization method and device for brightness compensation

An optimization method and device for brightness compensation, including: setting a compensation reference sampling area; providing a brightness obtaining apparatus, and photographing, by the brightness obtaining apparatus, the compensation reference sampling area to obtain a sampling frame; measuring brightness uniformity of all photographing units in the sampling frame, selecting one of the photographing units having good brightness uniformity as a sampling and photographing unit, and using brightness of the sampling and photographing unit as a compensation reference value to obtain a compensation reference curve; photographing a to-be-compensated panel to obtain a brightness compensation reference frame; applying brightness of all photographing units in the brightness compensation reference frame to the compensation reference curve, and calculating a plurality of pieces of brightness compensation data of the first pixel units corresponding to the photographing units; and performing brightness compensation for the first pixel units according to the pieces of brightness compensation data.